Air outlet casing

ABSTRACT

An air outlet casing, comprising an oblong casing with at least one inlet to be connected to an air channel and a plurality of outlet openings divided over the length of the casing can be made simple and so that the air output as well as flow direction are adjustable by provision of a regulating member extending in longitudinal direction of the casing, said regulating member being adjustable relatively to the outlet openings, and being provided with flow channels opposing the outlet openings.

United States Patent 91 Treffers Dec.2, 1975 l l AIR OUTLET CASING [75] Inventor: Willem Marinus Treffers, Baarn,

Netherlands [73] Assignee: Technisch Adviesbureau Treffers B.V., Baarn, Netherlands [22] Filed: Dec. 20, 1973 [2]] Appl. No.: 426,558

[52] US. Cl. 98/40 A; l37/625.l7 [51] Int. Cl. F24F 13/08 [58] Field of Search 98/40 C, 40 A, 40 D, 40 N;

[56] References Cited UNITED STATES PATENTS 2,867,238 l/l959 Wilfert 251/368 X 3,099,949 8/1963 Davidson 98/40 D 3,223,019 l2/l965 Schuh 98/40 D 3,308,745 3/1967 Davies 98/40 D 3,340,894 9/1967 Williams 25l/368 X 3,447,595 6/1969 Davis 93/40 DL 3,461,791 8/1969 Beyer 98/40 A 3,673.946 7/1972 Ragland 98/40 D Primary Examiner-William E. Wayner Attorney, Agent, or Firm-Snyder, Brown and Ramik [57] ABSTRACT An air outlet casing, comprising an oblong casing with at least one inlet to be connected to an air channel and a plurality of outlet openings divided over the length of the casing can be made simple and so that the air output as well as flow direction are adjustable by provision of a regulating member extending in longitudinal direction of the casing, said regulating member being adjustable relatively to the outlet openings, and being provided with flow channels opposing the outlet openings.

15 Claims, 3 Drawing Figures U.S. Patent Dec. 2, 1975 1 AIR OUTLET-CASING comprising an oblong casing with at least one inlet to be connected to an air channel and a plurality of outlet openings divided over the length of the casing.

Such air outlet casing is known.

The invention provides a simple air outlet casing of the above mentioned type, whereby the air quantity flowing out can be arranged by a regulating member extending in longitudinal direction of the casing, said regulating member being adjustable relatively to the outlet openings, and being provided with flow channels opposing the outlet openings.

The flow direction of the air flowing out can be adjusted'with the same regulating member if the regulating member is mounted swingably around its longitudi= nal axis in the casing.

In order to avoid or reduce the noise of air flowing out the regulating member is made preferably of a tube filled with foam material. A homogeneous division of the air flowing out over the length of the air outlet casing can be realized, if the inlet is mounted mainly in the middle of the length of the casing and in that a roofshaped air distributer is mounted in the casing opposite to the inlet.

The invention will be elucidated in the following description with reference to a drawing.

In the drawing:

FIG. 1 shows a side view partly broken away of a preferred embodiment of an air outlet casing according to the invention; I I

FIG. 2 shows a section over the line II-II of FIG. 1;

FIG. 3 shows a same section as FIG. 2 whereby the regulating member is turned into another position.

The air outlet casing according to the invention comprises mainly an oblong casing 2 provided with a silencing lining 3, e.g. of rock or glass wool, said air outlet casing comprising an inlet 4 to be connected to an air channel and a plurality of outlet openings 7 divided over the length of the the casing 2, spaced at mutual distances a. The outlet openings 7 are provided in a half round bent plate 8 providing wall portion defining a recess R and extend in tangential direction over the half round bent part of the plae 8. The openings 7 are defined between spaced apart solid portions 8 of the plate 8. Concentric with said half round bent part of plate 8 a regulating member is mounted in the casing 2 swingably as well as slidably. Said regulating member 5 is made of a tube 1 l, e.g. of plastic filled with a silencing foam material 10, e.g. polystyrene foam. In said regulating member 5 radial flow channels 9 are provided at regular distances a, said flow channels 9 corresponding with the outlet openings 7. Below the regulating member 5 at both sides directing strips 13 are attached to the casing 2.

In FIG. 2, wherein the flow channels 9 are shown vertical, the air flows according to arrow 14 straight downwards, while in FIG. 3 with a position of the regulating member 5 swung out of the middle, the air is directed substantially horizontally according to arrow 15 by means of a directing strip 13.

By axial displacement of the regulating member 5 according to arrow 16 from the position as shown in FIG. 1, the flow section of the outlet openings 7 and therewith the air output can be reduced.

Adjustment of the regulating member 5 can take place by means of a key 12.

Opposite to the inlet 4, positioned in the middle of I the length of the casing 2, a roof-shaped air distributer 17 is provided for taking care that almost uniform overpressure relatively to the atmosphere is prevailing over the whole length of the casing, so that almost uniform air output flows through all outlet openings 7.

What is claimed is: 1. An air outlet device comprising, in combination: an oblong casing having at least one inlet opening to be connected to an air supply and having a wall portion defining a recess along the length of the casing through which air is discharged from the casing, and said wall portion being provided with spaced apart solid portions defining therebetween outlet openings-spaced along the length of the re cess; and i 4 an elongate regulating member rotatably and axially slidably received in said recess, said regulating member having a plurality of spaced flow channels therethrough whereby axial sliding of said regulating member effects greater and lesser blocking of i said flow channels by said solid portions while rotation of said regulating member controls the direction of air discharge from said recess.

2. An air outlet device as defined in claim 1 wherein said wall portion is of arch-like form having an arcuate recess roof withinv which said .outlet openings are formed, said regulating member being cylindrical and closely fitting adjacent said recessroof.

3. An air outlet device as defined in claim 2 wherein said regulating member is in the form of a cylindrical casing and an inner core of sound insulating material, said flow channels being formed by radial passages through said casing and sound insulating material.

4. An air outlet device as defined in claim 3 wherein said outlet openings are circumferentially elongate within said recess roof. I

5. An air outlet casing as defined in claim 4 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and 'said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.

6. An air outlet casing as defined in claim 2 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.

7. An air outlet device as defined in claim 2 wherein said outlet openings are circumferentially elongate within said recess roof.

8. An air outlet casing as defined in claim 3 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.

9. An air outlet device as defined in claim 1 wherein said regulating member is in the form of a cylindrical casing and an inner core of sound insulating material, said flow channels being formed by radial passages through. said casing. and sound insulating material.

10. An air outlet device as defined in claim 1 wherein said regulating member comprises a body of sound insulating material.

II. An air' outlet device comprising, in combination: an elongate casing having at least one air inlet opening and a plurality of air outlet openings spaced along the length of the casing; an elongate regulating means movably associated with said air outlet openings for regulating flow of air from'said' casing, said regulating means comprising an elongate body of sound insulating material having a series of flow passages extending transversely therethrough alignable with said air outlet openings; and means for moving said regulating means to control the flow of air through said openings. 1 12. An air outlet device as defined in claim 11 wherein said regulating means also includes a cylindrical casing within which said sound insulating material is fitted, said flow passages extending both through said sound insulating material and said casing.

13. An air outlet device as defined in claim 12 wherein said sound insulating material is a foam mate- 14. An air outlet device as defined in claim 11 wherein said sound insulating material is a foam mate- 15. An air outlet device comprising, in combination: an elongate casing having at least one air inlet opening and having a wall portion defining a recess extending lengthwise of the casing, said wall portion including opposite side walls joined by a recess roof, said roof having spaced outlet openings, and opposite side strips directed mutually toward each other from said side walls to define an air discharge opening therebetween; and

an elongate regulating member rotatably received in strips. 

1. An air outlet device comprising, in combination: an oblong casing having at least one inlet opening to be connected to an air supply and having a wall portion defining a recess along the length of the casing through which air is discharged from the casing, and said wall portion being provided with spaced apart solid portions defining therebetween outlet openings spaced along the length of the recess; and an elongate regulating member rotatably and axially slidably received in said recess, said regulating member having a plurality of spaced flow channels therethrough whereby axial sliding of said regulating member effects greater and lesser blocking of said flow channels by said solid portions while rotation of said regulating member controls the direction of air discharge from said recess.
 2. An air outlet device as defined in claim 1 wherein said wall portion is of arch-like form having an arcuate recess roof within which said outlet openings are formed, said regulating member being cylindrical and closely fitting adjacent said recess roof.
 3. An air outlet device as defined in claim 2 wherein said regulating member is in the form of a cylindrical casing and an inner core of sound insulating material, said flow channels being formed by radial passages through said casing and sound insulating material.
 4. An air outlet device as defined in claim 3 wherein said outlet openings are circumferentially elongate within said recess roof.
 5. An air outlet casing as defined in claim 4 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.
 6. An air outlet casing as defined in claim 2 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.
 7. An air outlet device as defined in claim 2 wherein said outlet openings are circumferentially elongate within said recess roof.
 8. An air outlet casing as defined in claim 3 wherein said wall portion includes spaced opposing side walls leading to said recess roof, and said casing including opposite side strips directed mutually toward each other from said side walls to define a recess air discharge opening therebetween.
 9. An air outlet device as defined in claim 1 wherein said regulating member is in the form of a cylindrical casing and an inner core of sound insulating material, said flow channels being formed by radial passages through said casing and sound insulating material.
 10. An air outlet device as defined in claim 1 wherein said regulating member comprises a body of sound insulating material.
 11. An air outlet device comprising, in combination: an elongate casing having at least one air inlet opening and a plurality of air outlet openings spaced along the length of the casing; an elongate regulating means movably associated with said aiR outlet openings for regulating flow of air from said casing, said regulating means comprising an elongate body of sound insulating material having a series of flow passages extending transversely therethrough alignable with said air outlet openings; and means for moving said regulating means to control the flow of air through said openings.
 12. An air outlet device as defined in claim 11 wherein said regulating means also includes a cylindrical casing within which said sound insulating material is fitted, said flow passages extending both through said sound insulating material and said casing.
 13. An air outlet device as defined in claim 12 wherein said sound insulating material is a foam material.
 14. An air outlet device as defined in claim 11 wherein said sound insulating material is a foam material.
 15. An air outlet device comprising, in combination: an elongate casing having at least one air inlet opening and having a wall portion defining a recess extending lengthwise of the casing, said wall portion including opposite side walls joined by a recess roof, said roof having spaced outlet openings, and opposite side strips directed mutually toward each other from said side walls to define an air discharge opening therebetween; and an elongate regulating member rotatably received in said recess adjacent said roof and spaced from said strips to define an air space behind each strip, said regulating member having transverse flow channels therethrough for selectively directing air into said air spaces whereby to cause air discharge from said recess opening which is generally parallel to said strips. 